Noncollapsible float for liquid-level controls



May 25 1926. 1,586,476

E. E. SIMPSON NONCOLLAPSIBLE FLOAT FOR LIQUID LEVEL CONTROLS Filed May 4, 1925 Patented May 25, 1926.

V 5 uuirsn stares ea-rem eerie 1., same ED ARD EVERETT srmrsonpor TULSA, OKLAHOMA.

NONCOLLAPSIBLE FLOAT FOR LIQUID-LEVEL CONTROLS.

'Application filed m 4, 1925. Serial No. 27,887

This invention relates to floats of the noncollap'sible type.

In the oil and other industries it is necessary to control the level of liquids adapted to be held in containers and floats normally constructed for the purpose are frequently subjected to pressure and since such floats are air-filled or of the vacuum type they frequently fail to rise and fall automatically as the liquid falls below or rises above a predetermined height.

An object of the present invention is the provision of a device inwhich a float is provided which may be employed in containers, in which apressure is used which is greater than atmospheric pressure and which will not be affected in the usual manner so that the valve for controlling the inflow of liquids will always be closed when the liquid in the container reaches a predetermined height.

A further object of the invention is the.

provision of a float in which a pressure is maintained within the same which is approximately equal to the pressure in the container in which the float is operated.

This invention will be best understood from a consideration of the following detailed description, in view of the accompanying drawing forming a part of the speciflcathe operating mechanism. for maintaining the float in communication with the tank per se. 7

Referring more particularly to the drawings, 1 designates a container which is adapted to be filled with a liquid designated. by the line 2 which has a level at a predetermined height and which is adapted to be maintained at such height by controlling the valve for admitting the liquid by means 'of the device constructed in accordance with the principles of my invention. An auxiliary container is shown at 3 which is connected at its top and bottom respectively by means of the conduits 4: and 5.- The auxiliary container 3 is substantially cylindrical in shape but has its ends 6' conically formedand connected to elbows, 7 with the respective conduits t and 5.

The auxiliary container has air opening 8 to which is connected a casing 9 projecting laterally fromthe container3 and is closed to the atmosphere as is the container? A shaft 10 is mounted in bearings 11 formed in the side walls of the casing 9 and has its outer end,as shown at 12; projecting beyond said casing and bearings. i A lever 13 is rigidly connected with theshaft 10 and has on its outer enda depending link 1% which passes through the usual glands 15 of. a valve casing 16 in which is mounted av valve 15 and controlled by the movement of the link 14; The valve casing is included in an inlet p'ipe16 connected to the tank or container i I A hollow rod 7 17 is connected, as shown at 18, to the hollow shaft 10 and in open communication with said'shaft. A float- 19 is connected to the outer end of the rod 17 and is placed in communication with a conduit 20 by means of a pipe 21 which passes directly through the hollow shaft 10 and is provided with an elbow 22 where a pipe 23 passing throughthe hollow rod 17 places the float 19 in direct communication with the conduit 20. A swing connection or universal joint 2 l is provided on the end of the shaft 10 where the pipe 20,is connected with the pipe 21 so that the pipe 21 may be revolved with the shaft 10 when the float 19 is elevated and when said float is elevated the link 1st is drawn upwardly closing the valve in the casing 16.

As the liquid level in the container 3 is lowered ther float will be lowered and cause the lillli 1ato' open the valve in said casing in order to permit a sunicient quantity of will not afl'ectthe proper operation'of the A drain pipe s connected to the union Q l and to a container 81 so that any moisture that happens to enter the float may he read il v discharged there't'rom through the hollow pipes 21, and 2?) and the pipe 30.

What I claim is:

1. In a device of the class described, an a xiliary container having its opposite ends in open communication with the opposite ends of a main container, said auxiliary container provided with a casino; at one side in open comnninication with said auxiliary container, a hollow shaft mounted for rocking movement insaid casing and having one end projectingbeyond said casing, a lever connected with the projected end (it the shatl't a valve-tor controlling the flow of liquid to the main containeix a link tor connecting the lever with said valve, a float adapted to he supported by theliquid in the auxiliary container, a hollow rod connecting the float with the hollow shaft, and conduitsconnect ing the float with the upper end of the auxiliary container a portion of said conduit passing through the hollow rod and hollow shaft, and means tor draining moisture flOD'l the float.

2. In a device of the class described, an

auxiliar; container having; its opposite ends in open communication with the opposite ends of a main container, said auxiliary container provided with a casing at one side in open communication with said auxiliary container, a hollow sha'tt mounted for rocking movement in said casing and having one end projecting; beyond said casing a lever connected with the projected end of the shaft, a valve for controlling the flow o'l liquid to the main container, a link for connecting the lever with said valve, a float ai'lapted to he supported by the liquid in the auxiliau container, a hollow rod'conneeting the lloat with the hollow shaft, and conduits connecting the float withthe upper end oi the au ia-ry container, a portion of said coinluit passing through the hollow rod and hollow shaft, the portion of the conduit in the hollow shatt having universal connection with the conduit connecting the hollow shaft with the upper end of the' container, and a drain attached to the universal connection for permitting moisture that is collected in the float to be discharged there'- from.

nowann EVERETT SIMPSON. 

